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  • If youre looking for that competitive edge, look no further than our Race Series. These exhaust systems are designed with nothing but power in mind. Each Race Series system is developed in accordance with noise compliance regulations imposed by most racing sanctioning bodies worldwide.
  • FOR CLOSED COURSE COMPETITION ONLY; NOT INTENDED FOR STREET USE
  • All applications are marked with appropriate EPA noise emissions labels
  • Has not been tested for EPA noise compliance
  • The popular R-77 offers outstanding performance, thanks to being developed in the heat of competition. It features a trapezoidal design, which allows a large volume of packing material and in turn delivers top performance. The R-77 mufflers front cap is MIG-welded, while the end cap is riveted using high-end 304-L stainless steel rivets and bands.
  • Superbike technology and styling
  • Trapezoidal-shaped sleeve
  • Large volume of packing material
  • Straight baffle for ample flow
  • Innovative end-cap
  • Removable Low-Volume Insert
  • Stainless steel tail-pipe
  • Yoshimura Works Finish takes on a unique coloring after it goes through a heat cycle on the motorcycle that looks much like those titanium works components our factory racers use.